package kr.hkit.PowerJava.chapter05;

import java.util.Scanner;

public class CircleArea {
   public static void main(String args[]) {
	   
	   double radius;
	   double area;
	   Scanner input = new Scanner(System.in);
	   System.out.println("반지름을 입력하시오: ");
	   radius = input.nextDouble();
	   area = 3.14 * radius * radius;
	   
	   System.out.println(area);
   }
}
